CORRELATION BETWEEN QUANTITATIVE EEG PARAMETERS AND MRI LESION VOLUME IN ACUTE ISCHEMIC STROKE

Acute ischemic stroke (AIS) remains a leading cause of disability and mortality worldwide. Early and accurate assessment of infarct burden is crucial for prognosis and therapeutic decision-making. Magnetic resonance imaging (MRI), particularly diffusion-weighted imaging (DWI), is the gold standard for lesion volume quantification, while quantitative electroencephalography (qEEG) provides real-time functional information about cerebral electrical activity. Recent evidence suggests that qEEG biomarkers strongly correlate with structural brain injury measured by MRI. This review-based analytical study aims to synthesize current evidence on the relationship between qEEG parameters and MRI lesion volume in AIS. Findings demonstrate that increased delta power, delta/alpha ratio (DAR), and theta activity correlate positively with infarct size, whereas alpha and beta activity show inverse relationships. These associations support qEEG as a non-invasive, rapid surrogate marker for lesion burden and stroke severity assessment.